Apex AVS4080 Engine Valve Stem Oil Seal Set - Intake and Exhaust

Engine Valve Stem Oil Seal Set for Ford and Mazda

Apex AVS4080 is an engine valve stem oil seal set for intake and exhaust applications across a wide range of Ford, Lincoln, Mazda, and Mercury vehicles. It is a direct-fit sealing component for engines that need controlled oil sealing at the valve stem.

Key Features

• Engine valve stem oil seal set for intake and exhaust positions
• Fits a broad range of Ford, Lincoln, Mazda, and Mercury applications
• Supports oil control at the valve stem area
• Part number: AVS4080
• Fits applications including Ford Escape, Ford Focus, Mazda 3, and Mazda MX-5 Miata

Detailed Description

The Apex AVS4080 valve stem oil seal set is built for engines that require replacement seals at the intake and exhaust valve stems. It is listed for 2001-2021 applications across Ford, Lincoln, Mazda, and Mercury platforms, including Fits 2005-2021 Ford Escape, Intake and Exhaust, Fits 2003-2018 Ford Focus, Intake and Exhaust, and Fits 2006-2015 Mazda MX-5 Miata, Intake and Exhaust. The AVS4080 is also listed for Ford Fusion, Ford Explorer, Mazda 3, Mazda 6, and Lincoln MKZ coverage.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Repair Uses

• Oil consumption caused by worn valve stem seals
• Blue smoke during startup or deceleration
• Oil fouling at the intake or exhaust valve area
• Loss of proper sealing in high-mileage cylinder heads
• Valve train service during head rebuilds or top-end repairs

Installation Notes and Tips

Confirm engine code and exact vehicle application before installation. Valve stem seals are installed during cylinder head service, so proper disassembly, inspection, and clean sealing surfaces are important. Verify intake and exhaust valve locations during reassembly and follow the service procedure for the specific engine.

Quality Assurance

Apex AVS4080 is cataloged as an engine sealing component for direct replacement use in listed Ford, Lincoln, Mazda, and Mercury applications.